Method for erecting boxes



Feb., 16, 1960 H. D. WILLTT 2925,@20

METHOD FOR ERECTING BOXES Filed July 2, 195e v 2 sheets-sheet 1 FIG! FIG. 2

(26 32 (so 29 rs2 (26 (32 fso (29 s2 (32(26 32 (so [29 32 Feb. 16, 1960 H. D. WILLETT 2,925,020

METHOD FOR ERECTING BOXES i.

Filed July 2, 1956 2 Sheets-Sheet 2 METHOD FOR ERECTING BOXES Howardtn. willen, Alton, nl., assignor to crown zeilerbach Corporation, San Francisco, Calif., a corporation of Nevada The invention appertains to a processV employing a mandrel to erect and fabricate boxes and containers having inwardly projecting parts constructedof a solid tbreboard, corrugated breboard Vor other similar, bendable materials.

Various methods are employed to erectv tibreboard boxes and containers. One of the most common methods isV to manually erect the container blanks and manually maintain the container parts in position as they are stitched, glued or otherwise secured in place. With the more complex boxes and containers, it is more ditlicult to manually position and maintain container parts for fabrication. A particular type of container which is in general use for the shipment Yof bottled beverages and the like, embodies split, half cover members, having longitudinal, inwardly disposed flanges or projections located on the outer edges of half cover members. In some embodiments of thermultiple tripgbeverage containers, end cover flanges are also provided. An example of the ,class of containersv referred to4 is illustrated in the disclosure of Patent N0. 2,603,406, issued on July 15, `19512, Vto Walter C. George. In the various embodiments ofithe class 'of containers` referred to, various configurations of inwardly disposed cover 'projections-are provided." -It ris readily apparent that'git is not"y without some ditliculty that inwardly disposed `cover"projectionsand nited States Patent() flanges are maintained in prop'erp'osition as they are glued Yor sealedtogether. It is, therefore; an object of this invention to provide Vanovel process for maintaining the inwardly projecting parts ofcontainers of the type described in proper position and alignment while exerting internal. forces against the inwardly projecting parts to permit them to bev'xedly-"sjecured" toget h'err i t "I Another object of this invention is" to provide apron"- vention will be apparent to thosefskilled in the art upon a full and complete understanding'of the method and process described hereinafter.

This invention consists inthe parts,`ar rangements, and

combinations of parts hereinafterdescribedand claimed. The accompanying drawings Iform a part of this specification Aand like' numeralsV and symbolstherein appearing referto 4like'par'ts whereverthey occur. l

Fig. 1 Yis a ,plan ,view of a container blank which ferred form kof the invention;

'may be fabricated by a process which embodiesa pre.-

rice

Fig. 2 is a plan view of the blank shown in Fig. 1 wherein adjacent marginalportions thereof have been secured together; t

Fig. 3 is a perspective view of the blank shown in Fig. 1 wherein adjacent marginal portions thereof have been secured together;

Fig. 4 is a perspective view of a partially erected container shown with the bottom flaps folded into bottom-forming position;

Fig. Y5 is a perspective view of a partially erected container shown with the end wall reinforcing iiaps folded downwardly into place;

Fig. 6 is'fa perspective view shown with a mandrel device in position to be inserted into the partially erected container;

Fig. 7 is a perspective view of a partially erected container shown with a mandrel disposed therein and with adhesive applied to cover parts;

Figs. 8, 9 and 10 show various stages of the erection of inwardly projecting container cover parts;

Fig. 1l is a perspective view of the container cover parts and inwardly projecting portions thereon being inserted into the mandrel device.

Fig. l2 isa perspective view of horizontal external pressure means being applied to the container;

Fig. 13 is a .perspective view of external, vertically downward forces being applied tothe container;

Fig. 14 is a perspective view of the completed container shown' with the covers open and the mandrel in place; C

Fig. l5 is a perspective view of the completed container` .shown with the mandrel removed;

Fig'. 16 is an enlarged perspective view showing a form of the mandrel device which may beemployed in the embodiment of the inventiondescribed;

Fig. 17 is an enlarged, fragmentary, perspective view showing the detail of the mandrel locking means;

Fig. 18 is an enlarged fragmentary, perspective View of a center portion of the mandrel device; and

Fig. i9 is an enlarged perspective view of a completely erected4 containerformed by a preferred embodiment of the invention shown with one cover member open and one cover member closed.

For purposes of describing a preferred embodiment of the process employing the invention, a container blank A for a beer-box is shown in Fig. 1. The container blank A is of a preferred, well-known embodiment, commonly usedfor multi-trip beverage containers, such asl those designed to store and transport bottle beer,.etc.

The blank A 'is provided with opposing end walls 20 'connected alongcorner `defining scores 21 to side walls 22. Each end wall 20 is provided with a bottom end llap 23 while each side wall 22 is provided with a `side bottom ap 24. The bottom aps 24 are connected to their respective end and side walls along a bottom score 25.

nd`wall reinforcing panels 26 are foldably connected to the end wall panels 20 along a top defining s'core 27. Half cover flaps `2,8 are foldably connected along continuations of the top score 27 to upper margins of the side walls 22. Each top half cover Hap 28 is provided' with a sideV flange 29 and a side flap 30. End reinforcing flangesl are foldably connected to the end margins of the top half`cover` `ilaps 28. Each end reinforcing flange 31 is provided with an yend flap 32. In the particular embodiment ofthe container shown in the drawings, a notch opening 33 isprovided in the centrallportion of the upper margin of the end walls 20 and the adjacent portions of the end wall reinforcing panels 26.

A preferred'means of fabricating or` erecting the container within the scope of the present invention will involve rst stitching the container into position as shown Patented Feb. 16, 1960 What I claim is:

1. The method of erecting a container blank scored and slotted to define opposed pairs of side and end walls including a connecting ap hinged to a wall, half cover members hinged. to the side walls, side and ond flanges hinged to the half cover members and a connecting flap hinged to the end flanges of the cover members, the

said method comprising connecting the opposed pairs of side and end walls together by attaching said connecting flap to the remote wallY of the blank, opening the connected walls into tubular form and extending the cover members, flanges and connecting flange aps outwardly, preferably in a substantially common plane, inserting into the partially assembled container, a mandrel conforming substantially to the interior of the coninto a void in the mandrel, thereby enclosing the man- 2 drel, the said void in the mandrel substantially conforming to the shape of the inwardly projecting cover member parts and defined by substantially equal resilient mandrel halves, applying external continuing compressive force to position the inwardly projecting cover member parts into continuing compressing engagement to each other and to the surfaces of the mandrel for a predetermined time to effect permanent connecting together of the cover member parts by setting said adhesive applied thereto.V

2. The method set forth and claimed in claim 1 wherein the side anges of the half cover members have reinforcing aps hinged to their outer edges to which an adhesive is applied while in the outwardly extended position of the cover members, and the reinforcing flaps are folded flatwise over the cover mcmber flanges, enclosing the end ange connecting flaps.

References Cited in the file of this patent UNITED STATES PATENTS 977,698 Barksdale Dec. 6, 1910 997,021 Stevenson July 4, 1911 1,727,882 Hubbard Sept. 10, 1929 2,818,005 Drnec Dec. 31, 1957 2,826,969 Wasyluka et al. Mar. 18, 1958 

